Full list of all 38 Mark of the Ninja achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 30 achievements, and there is 1 DLC pack containing 8 achievements.
Complete the game in New Game Plus.
Kill a guard from inside the box.
Terrify a guard and cause him to stumble to his death.
Get the Undetected honor bonus 10 times in one level.
Within a single Focus, aim and throw three different types of items.
Earn all the upgrades.
Earn three stars in every level.
Find all three scrolls in every level.
Complete all of the challenge rooms.
Earn all the Seals in every level.
Determine your fate.
Escape from the Stronghold.
Assassinate Karajan.
Stealth kill an elite guard after stunning him.
Distract 25 guards using your equipment.
Terrify a guard using the result of a hanging stealth kill five times.
Terrorize 10 guards.
Stealth kill a guard from inside a dumpster.
Assassinate Kelly, the mercenary captain.
Kill a guard by getting other guards to shoot them.
Complete a level without killing any guards.
Complete a level without getting detected.
Complete a level without killing any guards and without being detected.
Perform five different types of stealth kills successfully in one level.
Throw the body of one guard to terrorize another.
Use a dead body to lure another guard and then stealth kill them.
Distract 25 guards using environmental objects.
Perform 25 successful stealth kills.
Save Azai from the mercenaries.
Kill one guard.
Complete the new Special Edition level.
Stun an elite guard with moths then dispatch him.
View any of the developer commentaries.
Knock out an enemy again that was revived from being knocked out.
Complete one of the original Mark of the Ninja levels using the Path of Wisdom.
Dispatch two enemies at once using a body infected with Toxic Fungus.
Read one of the history lesson developer commentaries.
Disable a spotlight using the Dusk Moths.